August zinsser



UNITED STATES PATENT OFFICE.

AUGUST ZINSSER, OF NE IV YORK, N. Y.

BARREL-LINING.

SPECIFICATION forming part of Letters Iatent No. 427,721, dated May 13, 1890. Application filed December 10, 1889. Serial No. 333,237. pecimcnsl To all whom it may concern.-

Be it known that I, AUGUST ZINSSER, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented a new and useful Improvement in Compounds for Lining Casks, of which the following is a specification.

My invention has reference to compounds for lining cask's, and in particular for beer kegs and barrels. Heretofore rosin has generally been used for this purpose; also, rosin mixed with oil. A lining made of rosin is very apt to scale off. It is injured by the hot water used in cleaning casks, and when the heads of a cask lined with rosin have been taken out and replaced the cask must be repitched.

The object of my invention is to produce a more elastic material for lining casks which will not be injured by hot water nor scale off; and it consists, essentially, of a compound of deodorized copal, some rosin, and a non-drying oil or fat, to which compound india-rubber may be added. 1

In preparing this compound I heat copal (by preference Manila copal) for some time beyond its melting-point, so as to drive off any oil contained therein, which would impart to the compound a bad smell and taste. To the molten copal I add about ten per cent. of rosin. I sometimes also add india-rubber softened and swelled up by spirits of turpentine, so as to form avery voluminous gelatinous mass, taking about one part of indiarubber to sixteen or eighteen parts of copal. I stir the mass until thoroughly mixed and keep at a moderate heat until the turpentine is evaporated. To this mass, whether mixed with india-rubber or not, I add a sufficient quantity of a non-drying fat-such as lard, mutton-fat, &c.-in sufficient quantitysay about one-fourth of the whole weight-so as to make the mass thin enough for use when hot, but of the consistence and pliability of india-rubber when cool. After the fat has been thoroughly incorporated I add granulated bone-coal, (about five per cent.,)

stirring the hot mass for about two hours. The bone-coal is then separated from the compound by pouring the mass through a sieve or allowing the bone-coal to settle and decanting the liquid. The bone-coal is used as a purifying agent, and by the action of the initial heating and of the bone-coal the copal becomes deodorized.

To impart a uniform dark color to the mass I add about five per cent. of asphalt.

The cask to be lined is first heated in the usual manner, a quantity of the hot liquid poured into it, well washed over the whole inner surface of the cask, and the surplus poured out, leaving a thin coating. \Vhen cooled off, the compound forms a pliable lining, which firmly adheres to the wood and does not scale off. \Vhen the headset a cask solined are taken off and replaced, it is not necessary to renew the lining, as the adjacent parts of the compound firmly reunite. The compound may be applied with a brush by adding fusel-oil or acetate of amyl to it. Although the addition of india-rubber to the compound increases its elasticity, it may be omitted where its cost renders it objectionable.

hat I claim as my invention. is-

1. A compound for lining casks, consisting of deodorized copal, rosin, and a non-drying fat, substantially as specified.

2. A compound for lining casks, consisting of deodorized copal, rosin, a non-drying fat, and india-rubber,substantially as specified.

3. A compound for lining casks, consisting of deodorized copal, rosin, india-rubber, and a non-drying fat, with coloring-matter, such as asphalt, substantially as specified.

In testimony that I claim the foregoing as my'invention I have signed my name,in presence of two witnesses, this 6th day of December, 1889.

AUGUST ZINSSER.

Witnesses:

THOMAS J. KEIGHARN, A. FABER DU FAUR. 

